Thailand

$566+ Cheap flights from Reagan-National (DCA) to Thailand

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BKK
Apr 2 — Apr 91
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Cheap flight deals from Reagan-National to Thailand

Keep the following information in mind while searching for Reagan-National to Thailand flight deals. Data was last updated March 28, 2025.

Round-trip from

$1,059
(China Airlines)

One-way from

$566
(China Airlines)

Popular in

December

Cheapest in

September

Average price

$1,117
From Washington, D.C. Reagan-National to Thailand
One-way flight from Washington, D.C. Reagan-National to Thailand
Highest demand for flights based on searches. 8% potential increase in price ($118 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
Average for round-trip flights in March 2025

Find flight deals from Reagan-National to Thailand

Cheapest flights from Reagan-National to Thailand
Explore the most affordable flight options available from Reagan-National to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This China Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:38 pmDCA - BKK
2 stops29h 07mMultiple Airlines
Mon 5/55:30 pmBKK - DCA
2 stops35h 02mMultiple Airlines
Deal found 3/27$1,059
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:30 amDCA - BKK
2 stops36h 00mSingapore Airlines
Tue 11/113:40 pmBKK - DCA
2 stops41h 15mSingapore Airlines
Deal found 3/27$1,155
This lol.travel deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/216:35 amDCA - BKK
2 stops41h 30mCathay Pacific
Wed 5/77:00 pmBKK - DCA
2 stops35h 07mCathay Pacific
Deal found 3/27$1,179
This Justfly.com deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/179:00 amDCA - HKT
2 stops37h 05mSingapore Airlines
Mon 9/223:05 pmHKT - DCA
2 stops40h 54mSingapore Airlines
Deal found 3/27$1,225
This Cathay Pacific deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:35 pmDCA - HKT
2 stops35h 00mMultiple Airlines
Thu 11/2712:20 pmHKT - DCA
2 stops33h 57mMultiple Airlines
Deal found 3/27$1,228
This Gurufare deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:45 amDCA - HKT
2 stops45h 50mCathay Pacific
Tue 11/1112:20 pmHKT - DCA
2 stops40h 05mCathay Pacific
Deal found 3/27$1,290
This Air Canada deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:40 amDCA - BKK
2 stops25h 15mAir Canada
Thu 9/257:35 amBKK - DCA
2 stops24h 31mAir Canada
Deal found 3/27$1,330
This Expedia deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/109:00 amDCA - CNX
2 stops51h 40mMultiple Airlines
Fri 8/2212:45 amCNX - DCA
2 stops31h 14mMultiple Airlines
Deal found 3/27$1,335
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:55 pmDCA - HKT
2 stops25h 55mQatar Airways
Sat 11/112:50 amHKT - DCA
2 stops29h 11mQatar Airways
Deal found 3/27$1,345
This Ovago deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:00 amDCA - BKK
2 stops34h 30mFinnair
Sat 5/177:10 amBKK - DCA
2 stops26h 26mFinnair
Deal found 3/27$1,411
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/318:30 amDCA - BKK
2 stops26h 55mPhilippine Airlines
Mon 9/2911:20 pmBKK - DCA
2 stops32h 54mPhilippine Airlines
Deal found 3/27$1,441
This Gurufare deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1211:55 amDCA - USM
2 stops43h 40mCathay Pacific
Mon 5/1910:55 amUSM - DCA
2 stops33h 34mCathay Pacific
Deal found 3/27$1,747

Cheapflights Fare Finder

Customize your flight search to find flights from Reagan-National to Thailand that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Thailand that are best for you.

Fly from

Reagan-National

Fly to

Thailand

Route

Depart

Return

Price

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Tue 4/22

5:38 pm-9:45 am

2 stops29h 07m

Bangkok Suvarnabhumi

Mon 5/5

5:30 pm-5:32 pm

2 stops35h 02m

$1,059

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Mon 4/21

6:35 am-11:05 am

2 stops41h 30m

Bangkok Suvarnabhumi

Wed 5/7

7:00 pm-7:07 pm

2 stops35h 07m

$1,179

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Wed 9/17

9:00 am-9:05 am

2 stops37h 05m

Phuket City

Mon 9/22

3:05 pm-8:59 pm

2 stops40h 54m

$1,225

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Sat 8/30

10:00 pm-10:50 am

2 stops25h 50m

Phuket City

Fri 9/12

6:20 pm-3:59 pm

2 stops32h 39m

$1,328

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Sat 8/30

7:30 pm-5:20 pm

2 stops34h 50m

Phuket City

Fri 9/12

6:20 pm-12:56 am

2 stops41h 36m

$1,349

Washington, D.C.Phuket City

DCA - HKT

DCAHKT

Washington, D.C. Reagan-National

Tue 9/9

6:55 pm-7:50 am

2 stops25h 55m

Phuket City

Tue 9/16

9:20 am-7:15 pm

2 stops44h 55m

$1,373

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Sat 5/3

8:00 am-5:30 am

2 stops34h 30m

Bangkok Suvarnabhumi

Sat 5/17

7:10 am-10:36 pm

2 stops26h 26m

$1,411

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Thu 5/1

8:59 am-8:35 am

3 stops36h 36m

Bangkok Suvarnabhumi

Fri 5/9

3:30 pm-8:58 pm

2 stops40h 28m

$1,453

Washington, D.C.Bangkok

DCA - BKK

DCABKK

Washington, D.C. Reagan-National

Wed 6/4

6:00 am-9:55 pm

2 stops28h 55m

Bangkok Suvarnabhumi

Wed 6/25

7:35 am-9:48 pm

2 stops25h 13m

$1,523

Washington, D.C.Chiang Mai

DCA - CNX

DCACNX

Washington, D.C. Reagan-National

Mon 4/7

5:38 pm-10:25 am

2 stops29h 47m

Chiang Mai

Fri 4/18

11:35 am-4:38 pm

2 stops40h 03m

$1,608

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 35 results
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Best time to book a flight from Reagan-National to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Thailand

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Thailand?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Thailand (average of $963). Flying from Washington, D.C. Reagan-National Airport to Thailand in December is currently the most expensive (average of $1,574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to TH?

Find hourly flight availability from Reagan-National to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Reagan-National Airport to Thailand as you normally would.

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Thailand. Reviews last updated March 28, 2025.
Read reviews from past customers who have flown Korean Air, Japan Airlines and Singapore Airlines from Washington, D.C. to Thailand. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
8.0
Very good

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Thailand. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Thailand one-way?

    The cheapest airline one-way is Cathay Pacific, with whom users have recently found tickets for as low as $630. However, be on the lookout for offers from Air Canada and Singapore Airlines, as they are both options that can get you from Washington, D.C. Reagan-National Airport to Thailand for a low price.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to Thailand?

  • Can I find deals for flights from Reagan-National to Thailand that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Thailand flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Thailand?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Thailand.

  • Can I find deals for business class flights from Reagan-National to Thailand?

    Yes. Cheapflights offers flight deals from Reagan-National to Thailand by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Thailand?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Thailand (average of $963). Flying from Washington, D.C. Reagan-National Airport to Thailand in December is currently the most expensive (average of $1,574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Reagan-National to Thailand

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Reagan-National to Thailand

Discover the top 4 airlines that operate flights from Reagan-National to Thailand. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qatar AirwaysCheapest$966Average$1,016FlexibilityNo cancel feeOn-time68%
American AirlinesCheapest$1,065Average$1,197FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$1,152Average$1,381FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$1,206Average$1,480FlexibilityNo cancel feeOn-time67%
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